The present invention provides a training platform based on authentication big data. The platform comprises: a certification personnel training system, a certification personnel capability level analysis system, a certification personnel examination system, a client, a certification personnel registration system, a certification personnel supervision system, and an authentication system arranged in each certification authority. When a user enters the certification training system through the client, fills in the relevant information, and makes payment, the system automatically checks the identity information of the user, retrieves the past test results, retrieves the past audit cases, retrieves whether there is violation audit information, determines the user as the non-registered auditor and the different capability level auditor according to the retrieval result, automatically assigns training types according to the determination result, provides relevant training courses for the user to choose, automatically links to the training course database after the user selects the course, and pop ups training course videos for learning. According to the training platform provided by the present invention, the professional capability and quality of the certification auditor can be improved, so that the validity of the certification of the whole industry can be improved.